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douwevdijk / generate-pushid.js
Created October 24, 2015 08:27 — forked from mikelehen/generate-pushid.js
JavaScript code for generating Firebase Push IDs
View generate-pushid.js
* Fancy ID generator that creates 20-character string identifiers with the following properties:
* 1. They're based on timestamp so that they sort *after* any existing ids.
* 2. They contain 72-bits of random data after the timestamp so that IDs won't collide with other clients' IDs.
* 3. They sort *lexicographically* (so the timestamp is converted to characters that will sort properly).
* 4. They're monotonically increasing. Even if you generate more than one in the same timestamp, the
* latter ones will sort after the former ones. We do this by using the previous random bits
* but "incrementing" them by 1 (only in the case of a timestamp collision).
douwevdijk / gist:1a76b4e061d65e6e9b14
Created December 16, 2015 10:49
View gist:1a76b4e061d65e6e9b14
Error: java.lang.StringIndexOutOfBoundsException: String index out of range: -1
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.runPipeline(
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.processOnePackageOutput(
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(
at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigGenericMapReduce$Reduce.reduce(
at org.apache.hadoop.mapred.ReduceTask.runNewReducer(
at org.apache.hadoop.mapred.YarnChild$
at Method)